TWI633477B - Touch window and touch device including the same - Google Patents

Touch window and touch device including the same

Info

Publication number
TWI633477B
TWI633477B TW103129839A TW103129839A TWI633477B TW I633477 B TWI633477 B TW I633477B TW 103129839 A TW103129839 A TW 103129839A TW 103129839 A TW103129839 A TW 103129839A TW I633477 B TWI633477 B TW I633477B
Authority
TW
Taiwan
Prior art keywords
sensing electrode
protective layer
substrate
touch sensor
capacitive touch
Prior art date
Application number
TW103129839A
Other languages
Chinese (zh)
Other versions
TW201514817A (en
Inventor
姜文淑
Original Assignee
韓商Lg伊諾特股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to ??10-2013-0107066 priority Critical
Priority to KR20130107066A priority patent/KR20150028471A/en
Application filed by 韓商Lg伊諾特股份有限公司 filed Critical 韓商Lg伊諾特股份有限公司
Publication of TW201514817A publication Critical patent/TW201514817A/en
Application granted granted Critical
Publication of TWI633477B publication Critical patent/TWI633477B/en

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Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412Digitisers structurally integrated in a display
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B5/00Non-insulated conductors or conductive bodies characterised by their form
    • H01B5/14Non-insulated conductors or conductive bodies characterised by their form comprising conductive layers or films on insulating-supports
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04102Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04112Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material

Abstract

The invention discloses a touch window and a touch device including the touch window. The touch window includes: a substrate; a sensing electrode disposed on the substrate to sense a position; and a protective layer on the sensing electrode. The touch device includes: a touch window; and a driving part on the touch window, wherein the touch window includes: a substrate; and a sensing electrode disposed on the substrate to sense a Position; and a protective layer on the sensing electrode.

Description

Touch window and touch-type device including the same

The present invention claims priority to Korean Patent Case No. 10-2013-0107066, filed on September 6, 2013. It is incorporated herein by reference for reference.

The present invention relates to a touch window and a touch device including the same.

Recently, a touch panel that performs an input function by touching an image displayed on a touch-sensitive device with an input device such as a stylus or a hand has been applied to various electronic appliances.

Touch panels can be generally classified into resistive touch panels and capacitive touch panels. In a resistive touch panel, when a pressure is applied to an input device, a position of a touch point is detected according to a change in resistance of a connection between electrodes. In a capacitive touch panel, when a user's finger touches the capacitive touch panel, the position of the touch point is detected by the capacitance change between the electrodes. When considering the convenience of production methods and inductive forces, capacitive touch panels have recently attracted much attention among smaller touch panels.

At the same time, demand for flexible touch panels has recently increased. That is, if the touch panel is flexible or bendable, the user experience will be extended. However, indium tin oxide (ITO), which is the most widely used material for transparent electrodes of touch panels, is susceptible to physical damage when the substrate is flexed and bent, causing the electrode properties to deteriorate. Therefore, indium tin oxide (ITO) is not suitable for flexible devices. Meanwhile, when a non-ITO flexible material is used for a transparent electrode, the visibility of the non-ITO flexible material is worse than that of ITO due to light reflection factors.

The embodiment will provide a touch window with improved reliability and a touch device including the touch window.

A touch window according to an embodiment includes: a substrate; a sensing electrode disposed on the substrate to sense a position; and a protective layer on the sensing electrode.

A touch device according to an embodiment includes: a touch window; and a driving part on the touch window, wherein the touch window includes: a substrate; and a sensing electrode disposed on the substrate. To sense a position; and a protective layer on the sensing electrode.

According to the touch window of the embodiment, when the substrate is bent or flexed, the protective layer can protect the sensing electrode from physical impact. That is, the protective layer can strengthen the sensing electrode, so that its reliability can be improved.

In addition, by adjusting the refractive index to match the refractive index of the sensing electrode, the refractive index of the protective layer and the sensing electrode are matched so that the optical properties and visibility can be improved.

20‧‧‧Display Panel

66‧‧‧The first adhesive layer

67‧‧‧Second adhesive layer

68‧‧‧ Adhesive layer

100‧‧‧ substrate

105‧‧‧touch substrate

106‧‧‧Touch substrate

110‧‧‧ the first child pattern

120‧‧‧ the second child pattern

130‧‧‧ cover substrate

150‧‧‧ resin layer

150a‧‧‧gravure printing

200‧‧‧sensing electrode / sensitive electrode

201‧‧‧first sensing electrode

202‧‧‧Second sensing electrode

210‧‧‧third sensing electrode

220‧‧‧Fourth sensing electrode

221‧‧‧ base material

222‧‧‧Interconnection Structure

230‧‧‧bridge electrode

240‧‧‧ electrode layer

270‧‧‧electrode material

300‧‧‧Wire

400‧‧‧ protective layer

401‧‧‧first protective layer

402‧‧‧Second protective layer

600‧‧‧ Insulation

630‧‧‧Insulation

700‧‧‧touch panel / display panel

701‧‧‧first substrate

702‧‧‧second substrate

1AA‧‧‧First action area

2AA‧‧‧Second area of action

AA‧‧‧Area of Action

LA‧‧‧Grid

OA‧‧‧Grid opening

UA‧‧‧ Non-active area

FIG. 1 is a plan view showing a touch window according to an embodiment.

2 and 3 are cross-sectional views taken along line AA ′ of FIG. 1.

FIG. 4 is a cross-sectional view illustrating a touch window according to another embodiment.

FIG. 5 is a plan view showing a touch window according to another embodiment.

FIG. 6 is a sectional view taken along line BB ′ of FIG. 5.

7 to 10 are cross-sectional views illustrating a touch window according to another embodiment.

FIG. 11 is a plan view showing a touch window according to another embodiment.

12 to 14 are cross-sectional views taken along a line CC ′ of FIG. 11.

15 and 16 are views illustrating a touch device according to another embodiment.

17 to 20 are views illustrating a touch device according to another embodiment.

FIG. 21 is a cross-sectional view showing a touch device with a touch window disposed on a driving part according to an embodiment.

22 to 25 are perspective views showing a touch device according to another embodiment.

In the following description of the embodiments, it should be understood that when a layer (or film), region, pattern, or structure is referred to as another substrate, another layer (or film), another region, another pad, or another pattern When it is "up" or "down", it can be "directly" or "indirectly" on another substrate, layer (or film), region, pad, or pattern, or one or more intervening layers can also be present. The positions of such layers and layers have been described with reference to the drawings.

The thickness and size of each layer shown in the drawings may be exaggerated, omitted, or drawn schematically for convenience or clarity. In addition, the size of the components does not absolutely reflect the actual size.

Hereinafter, embodiments will be described with reference to the accompanying drawings.

First, a touch window according to an embodiment will be described in detail with reference to FIGS. 1 to 3. FIG. 1 is a plan view showing a touch window according to an embodiment. 2 and 3 are cross-sectional views taken along line AA ′ of FIG. 1.

Referring to FIG. 1, a touch window according to an embodiment includes a substrate 100 having an active area AA defining a position of a detection input device (eg, a finger) and a non-active area UA provided at a peripheral portion of the active area AA.

In this case, the sensing electrode 200 may be formed in the active area AA, so that the input device may be sensed. A wire 300 electrically connecting the sensing electrodes 200 to each other may be formed in the non-active area UA. In addition, an external circuit connected to the wire 300 may be placed in the non-active area UA.

When an input device such as a finger touches the touch window, the input device generates a capacitance difference on the touched portion, and the touched portion indicating the difference in capacitance can be detected as a touch point.

This touch window will be described in more detail below.

The substrate 100 may be formed of various materials capable of supporting the sensing electrodes 200, the leads 300, and the circuit substrate formed on the substrate 100. The substrate 100 may include a glass substrate, a plastic substrate including a polyethylene terephthalate (PET) film, or a sapphire substrate.

Sapphire has superior electrical characteristics such as permittivity, so that the touch response speed can be greatly increased and it is easy to implement touches such as reserved space. In addition, because sapphire has a high surface hardness, sapphire is suitable for a cover substrate. Temporary means a technique for identifying coordinates even at a short distance from the display. In addition, the substrate 100 may be bent to have a partially curved surface. That is, the substrate 100 may be bent to have a partially flat surface and a partially curved surface. In detail, the end of the substrate 100 may be bent to have a curved surface, or may be bent or flexed to have a surface including a random curvature.

The outer dummy layer is formed in the non-active area UA of the substrate 100. The outer dummy layer may be coated with a material having a predetermined color so that the conductive wire 300 cannot be seen from outside and a printed circuit board connecting the conductive wire 300 to an external circuit. The outer dummy layer may have a color suitable for its desired appearance. For example, the outer dummy layer includes a black pigment to represent black. In addition, the desired mark can be passed through various methods The case was formed in the outer dummy layer. The outer dummy layer may be formed through deposition, printing, and wet coating schemes.

The sensing electrode 200 may be formed on the substrate 100. The sensing electrode 200 can detect whether an input device such as a finger touches it. FIG. 1 shows a sensing electrode 200 extending on a substrate 100 in a direction, but the embodiment is not limited thereto. Therefore, the sensing electrode 200 may extend in another direction crossing the one direction. In addition, the sensing electrode 200 may include two types of sensing electrodes having a shape extending in the directions.

The sensing electrode 200 may include a transparent conductive material. For example, the sensing electrode 200 may include a metal oxide such as indium tin oxide, indium zinc oxide, copper oxide, tin oxide, zinc oxide, or titanium oxide. These materials are very useful for visibility without interrupting the transmission of light.

The protective layer 400 is disposed on the sensing electrode 200. The protective layer 400 may be in direct contact with the sensing electrode 200. That is, the protective layer 400 may be in direct contact with the top surface of the sensing electrode 200. The protective layer 400 may protect the sensing electrode 200. In detail, as shown in FIG. 3, when the substrate is bent or flexed, the protective layer 400 may protect the sensing electrode 200 from a physical impact. That is, the protection layer 400 can strengthen the sensing electrode 200 so that the reliability can be improved.

In addition, by adjusting the refractive index, the protective layer 400 matches the refractive index of the sensing electrode 200, so that the optical properties and visibility can be improved.

The protective layer 400 may include various polymer materials. The protective layer 400 may include polyurethane, acrylate, methacrylate, epoxy, polycarbonate, polyethylene, or polystyrene.

The protective layer 400 may have a thickness T in a range of 1 μm to 20 μm. When the thickness T of the protective layer 400 is 1 μm or more, the sensing electrode 200 may be physically strengthened. When the thickness T of the protective layer 400 is 20 μm or less, the thickness of the touch window can be prevented from increasing. Preferably, the thickness of the protective layer 400 may be in a range of 2 μm to 15 μm. More preferably, the thickness of the protective layer 400 may be in a range of 4 μm to 10 μm.

Next, the conductive wire 300 is formed in the non-active area UA. An electrical signal may be applied to the sensing electrode 200 via the wire 300. The wire 300 is formed in the non-active area UA so that the wire 300 is not visible.

Meanwhile, although not shown in the drawings, a circuit substrate connected to the wire 300 may be further provided. Various types of printed circuit boards can be applied as the circuit substrate. For example, A flexible printed circuit board (FPCB) can be applied as a circuit substrate.

Hereinafter, a touch window according to another embodiment will be described with reference to FIGS. 4 to 13. In the following description of a touch window according to another embodiment, portions similar or identical to the previously described embodiments will be omitted for the sake of clarity and brief description.

First, referring to FIG. 4, the protective layer 400 includes a first protective layer 401 and a second protective layer 402. The first protective layer 401 is disposed on a top surface of the sensing electrode 200. The second protective layer 402 is disposed on a bottom surface of the sensing electrode 200. That is, the top surface and the bottom surface of the sensing electrode 200 may be protected by the first protection layer 401 and the second protection layer 402. Therefore, the strength enhancement of the sensing electrode 200 can be maximized.

5 and 6, the sensing electrode 200 may include a conductive pattern. For example, the sensing electrodes 200 are arranged in a grid shape.

In detail, the sensing electrode 200 may include a grid opening OA and a grid line LA. In this case, the line width of the grid line LA may be in a range of 0.1 μm to 10 μm. Due to the characteristics of the manufacturing process, grid lines LA of 0.1 μm or less may not be formed. If the line width is 10 μm or less, the pattern of the sensing electrode 200 may not be seen. Preferably, the line width of the grid line LA may be in a range of 0.5 μm to 7 μm. More preferably, the line width of the grid line LA may be in a range of 1 μm to 3.5 μm.

Meanwhile, as shown in FIG. 5, the mesh opening OA may have a rectangular shape, but the embodiment is not limited thereto. The mesh opening OA may have various shapes such as a polygonal shape, including a diamond shape, a pentagonal shape or a hexagonal shape, or a circular shape. In addition, the mesh openings OA may be formed in a regular or random shape.

Since the sensing electrode 200 has a grid shape, the pattern of the sensing electrode 200 may not be seen in the active area AA. In other words, even when the sensing electrode 200 is formed of a metal, a pattern may not be seen. In addition, even when the sensing electrode 200 is applied to a large touch window, the resistance of the touch window can still be reduced.

Referring to FIG. 6, the sensing electrode 200 may include a first sub-pattern 110, a second sub-pattern 120, and an electrode layer 240.

The first sub-pattern 110 is disposed on the resin layer 150. The first sub-pattern 110 is disposed on the grid line LA. Therefore, the first sub-patterns 110 are arranged in a grid shape. First sub-pattern 110 can be embossed.

Meanwhile, the sub-pattern 120 is disposed adjacent to the first sub-pattern 120. The second sub-pattern 120 is disposed on the resin layer 150. The second sub-pattern 120 is disposed in the mesh opening OA. Therefore, the second sub-pattern 120 may be inserted between the first sub-patterns 110. The second sub-pattern 120 may be embossed.

The first and second sub-patterns 110 and 120 may include a resin or a polymer. The first sub-pattern 110 and the second sub-pattern 120 may be formed through an embossing process. That is, the first sub-pattern 110 and the second sub-pattern 120 may be formed on the resin layer 150 through a mold for forming a desired pattern.

The electrode layer 240 is disposed on the first sub-pattern 110. Therefore, the electrode layer 240 is disposed on the grid line LA in a grid shape.

The sensing electrode 200 may include a metal material having excellent conductivity. For example, the sensing electrode 200 may include at least one of copper (Cu), gold (Au), silver (Ag), aluminum (Al), titanium (Ti), nickel (Ni), and an alloy thereof. Therefore, the electrical characteristics of the touch window to which the sensing electrode 200 is applied can be improved.

The protective layer 400 may be disposed on the electrode layer 240. The protective layer 400 may be disposed to surround a top surface and a side surface of the electrode layer 240. As shown in FIG. 6, the protective layer 400 may be disposed only on the electrode layer 240. Therefore, the protective layer 400 may be disposed in a grid shape.

Meanwhile, referring to FIG. 7, the resin layer 150 may be disposed on the substrate 100 and the resin layer 150 may include a gravure printing portion 150 a. In this case, the electrode layer 240 may be disposed in the gravure printing portion 150a. That is, the sensing electrode 200 may be formed by filling the intaglio printed portion 150 a with the electrode material 270. Therefore, the number, time, and cost of processes can be reduced compared to deposition and photographic processes according to the related technology.

Referring to FIG. 8, a sensing electrode 200 having a conductive pattern may be formed by etching a metal material on the substrate 100. For example, after copper (Cu) is deposited on the substrate, metal etching may be performed to form the sensing electrode 200.

Referring to FIG. 9, the sensing electrode 200 may include an interconnection structure 222. The interconnect structure 222 may include a fine structure having a diameter in a range of 10 nm to 200 nm. For example, the sensing electrode 200 may include a nanowire. The sensing electrode 200 may include a metal nanowire.

Referring to FIG. 10, the sensing electrode 200 may include a base material 221 and a nanowire. The base material 221 includes a light-sensitive material. Since the base material 221 includes a light-sensitive material, the sensing electrode 200 can be formed through an exposure and development process.

The sensing electrode 200 may include a light-sensitive nanowire film. Because the sensitive electrode 200 includes a light-sensitive nanowire film, the thickness of the sensing electrode 200 may be thin. That is, even if the sensing electrode 200 includes a nanowire, the entire thickness of the sensing electrode 200 may become thin.

Meanwhile, although the display protection layer 400 is disposed on the front surface of the substrate 100, the embodiment is not limited thereto. Therefore, the protective layer 400 may be disposed only on the sensing electrode 200.

11 to FIG. 14, the substrate includes a first active region 1AA and a second active region 2AA.

The first sensing electrode 201 may be disposed in the first active region 1AA.

The second action area 2AA may be disposed at a side of the first action area 1AA. As shown in the figure, the second action area 2AA may be disposed at both sides of the first action area 1AA. Referring to FIG. 13, the second action area 2AA may be bent from the first action area 1AA. That is, the second action area 2AA may be flexible.

The second action area 2AA bent or flexed from the first action area 1AA is fixed in a state where the second action area 2AA is bent, so that the shape in the bent state can be maintained. In addition, when a physical force is applied in a direction opposite to the bending direction while the bending state is maintained, the second action area 2AA may be modified to generate a bend or flattening corresponding to the amount and direction of the force applied to it.

The first sensing electrode 201 and the second sensing electrode 202 may include materials different from each other. In detail, the first electrode 201 and the second electrode 202 may include materials having mutually different properties.

For example, the first sensing electrode 201 may include a first material. The first material may include a metal oxide, such as indium tin oxide, indium zinc oxide, copper oxide, tin oxide, zinc oxide, or titanium oxide. The first material is very useful for visibility without interrupting the transmission of light. However, the first material is also easily damaged due to the bending and flexing of the substrate.

The second sensing electrode 202 may include a second material different from the first material. Give For example, the second material may include various metal materials, including nanowires, carbon nanotubes (CNTs), graphene, or conductive polymers. In addition, the second sensing electrode 202 may include at least one of copper (Cu), gold (Au), silver (Ag), aluminum (Al), titanium (Ti), nickel (Ni), and an alloy thereof. The second material has a flexible property suitable for flexion or bending of the substrate.

Meanwhile, on the contrary, the first sensing electrode 201 may include a second material and the second sensing electrode 202 may include a first material.

In this case, the protective layer 400 is disposed on the second sensing electrode 202. That is, the protective layer 400 is disposed in the second active region 2AA. That is, the protective layer 400 is only disposed in the curved second action area 2AA, so that the second sensing electrode 202 can be bent without any physical damage.

In addition, the protective layer 400 may be inserted between the first sensing electrode 201 and the second sensing electrode 202. The protective layer 400 is disposed in a boundary region between the first active region 1AA and the second active region 2AA. In other words, because the protective layer 400 is disposed in a boundary region where the protective layer 400 bends from the first active area 1AA toward the second active area 2AA, the protective layer 400 can be bent without any physical damage.

That is, a partially curved touch window can be reached through the protective layer 400. Therefore, the structural diversity of the flexible touch window can be preserved.

Meanwhile, the protective layer 400 may be additionally disposed even in the first active region 1AA, and of course, may be disposed on the front surface of the substrate 100.

Another embodiment according to the present invention will be described with reference to FIGS. 15 and 16. 15 and 16 are views illustrating a touch device to which a touch window is applied according to another embodiment. The same description as that in the embodiment described above will be omitted to avoid redundancy. The same reference numbers will be used to refer to the same elements.

Referring to FIGS. 15 and 16, a touch device according to another embodiment may include a touch window formed integrally with the display panel 700. That is, the substrate supporting at least one sensing electrode may be omitted.

In detail, at least one sensing electrode may be formed on at least one surface of the display panel 700. The display panel 700 includes a first substrate 701 and a second substrate 702. That is, at least one sensing electrode may be formed on at least one surface of the first substrate 701 or the second substrate 702.

When the display panel 700 is a liquid crystal display panel, the display panel 700 may be formed in a structure in which a first substrate 701 including a thin film transistor (TFT) and a pixel electrode and a second substrate 702 including a color filter layer are combined with each other, At the same time, a liquid crystal layer is interposed therebetween.

In addition, the display panel 700 may be a liquid crystal display panel having a COT (color filter on transistor) structure, in which the second substrate 702 is combined with the first substrate 701 formed with a thin film transistor, a color filter, and a black matrix. At the same time, a liquid crystal layer is interposed between the first substrate 701 and the second substrate 702. That is, a thin film transistor is formed on the first substrate 701, a protective layer is formed on the thin film transistor, and a color filter layer is formed on the protective layer. In addition, a pixel electrode in contact with the thin film transistor is formed on the first substrate 701. In this case, in order to improve the porosity and simplify the mask process, the black matrix can be omitted and a common electrode can be formed to serve as the black matrix.

In addition, when the display panel 700 is a liquid crystal panel, the display device may further include a backlight unit for providing light at a rear surface of the display panel 700.

When the display panel 700 is an organic light-emitting device, the display panel 700 includes a self-light-emitting device that does not require any additional light source. The thin film transistor is formed on the first substrate 701 of the display panel 700, and an organic light emitting device (OLED) is formed in contact with the thin film transistor. The OLED may include an anode, a cathode, and an organic light emitting layer formed between the anode and the cathode. In addition, the display panel 700 may further include a second substrate 702 on the OLED, and the second substrate 702 performs a function of an encapsulated substrate for encapsulation.

In this case, at least one sensing electrode may be formed on the top surface of the substrate and disposed at the upper portion. Although a configuration in which a sensing electrode is formed on the top surface of the second substrate 702 is depicted in the drawing, if the sensing electrode is disposed on the first substrate 701, at least one sensing electrode may be formed on the first substrate 701. On the top surface.

15, a third sensing electrode 210 may be formed on a top surface of the display panel 700. In addition, a first wire connected to the third sensing electrode 210 may be formed. The touch substrate 105 on which the fourth sensing electrode 220 and the second lead are formed may be formed on the display panel 700 on which the third sensing electrode 210 is formed. The first adhesive layer 66 may be formed between the touch substrate 105 and the display panel 700.

Although the fourth sensing electrode 220 formed on the top surface of the touch substrate 105 and the cover substrate 130 disposed on the touch substrate are depicted in the drawings, the second adhesive layer 67 is inserted between the fourth sensing electrode 220 and the cover substrate 130, but the embodiment is not limited thereto. The fourth sensing electrode 220 may be formed on a rear surface of the touch substrate 105. In this case, the touch substrate 105 can serve as a cover substrate.

That is, the embodiment is not limited to the drawings and is sufficient if the touch-sensitive device has the following structure: the third sensing electrode 210 is formed on the top surface of the display panel 700 to support the touch of the fourth sensing electrode 220. The control substrate 105 is disposed on the display panel 700, and the touch substrate 105 and the display panel 700 are combined.

In addition, the touch substrate 105 may be a polarizing plate. That is, the fourth sensing electrode 220 may be formed on the top or the rear surface of the polarizing plate. Therefore, the fourth sensing electrode and the polarizing plate can be integrally formed.

In addition, a polarizing plate can be further provided without the touch substrate 105. In this case, the polarizing plate can be placed under the touch substrate 105. For example, a polarizing plate may be inserted between the touch substrate 105 and the display panel 700. In addition, a polarizing plate may be disposed on the touch substrate 105.

The polarizing plate may be a linear polarizing plate or an anti-reflective polarizing plate. For example, when the display panel 700 is a liquid crystal display panel, the polarizing plate may be a linear polarizing plate. In addition, when the display panel 700 is an organic electroluminescence display panel, the polarizing plate may be an anti-reflective polarizing plate.

Referring to FIG. 16, the third sensing electrode 210 and the fourth sensing electrode 220 may be formed on a top surface of the display panel 700. In addition, a first wire connected to the third sensing electrode 210 and a second wire connected to the fourth sensing electrode 220 may be formed on a top surface of the display panel 700.

In addition, an insulating layer 600 that exposes the fourth sensing electrode 220 may be formed on the third sensing electrode 210. A bridge electrode 230 for connecting the fourth sensing electrodes 220 to each other may be further formed on the insulating layer 600.

The embodiments are not limited to the drawings. The third sensing electrode 210 and the first and second leads may be formed on the top surface of the display panel 700, and an insulating layer may be formed on the third sensing electrode 210 and the first lead. The fourth sensing electrode 220 may be formed on the insulating layer, and may further include a connection portion for connecting the fourth sensing electrode 220 and the second wire to each other.

In addition, the third sensing electrode 210 and the fourth sensing electrode 220 and the first conductive electrode The line and the second conductive line may be formed on the top surface of the display panel 700 in the active area. The third sensing electrode 210 and the fourth sensing electrode 220 may be spaced apart and adjacent to each other. That is, the insulating layer and the bridge electrode can be omitted.

That is, the embodiment is not limited to the drawings, and it is sufficient in the case where the third sensing electrode 210 and the fourth sensing electrode 220 are formed on the display panel 70 without any additional substrate supporting the sensing electrode. .

The cover substrate 130 may be disposed on the display panel 700, and at the same time, the adhesive layer 68 is inserted between the cover substrate and the display panel 700. In this case, the polarizing plate may be disposed between the display panel 700 and the cover substrate 130.

Next, description will be made with reference to FIGS. 17 to 20. 17 to 20 are views illustrating a touch device to which a touch window is applied according to still another embodiment. The same description as that in the embodiment described above will be omitted in order to avoid redundancy. The same reference numbers will be used to refer to the same elements.

Referring to FIGS. 17 to 20, a touch-control device according to still another embodiment may include a touch window formed integrally with a display panel. That is, the substrate supporting at least one sensing electrode may be omitted. All substrates supporting the sensing electrodes can be omitted.

A sensing electrode serving as a sensor disposed in the active area to sense a touch and a wire to which an electrical signal is applied may be formed inside the display panel. In detail, at least one sensing electrode or at least one wire may be formed inside the display panel.

The display panel includes a first substrate 701 and a second substrate 702. In this case, at least one of the third sensing electrode 210 and the fourth sensing electrode 220 is disposed between the first substrate 701 and the second substrate 702. That is, at least one sensing electrode may be formed on at least one surface of the first substrate 701 or the second substrate 702.

Referring to FIG. 17 and FIG. 20, the third sensing electrode 210 and the fourth sensing electrode 220 and the first conductive line and the second conductive line may be disposed between the first substrate 701 and the second substrate 702. That is, the third sensing electrode 210 and the fourth sensing electrode 220 and the first lead and the second lead may be disposed inside the display panel.

17, the third sensing electrode 210 and the first conductive line may be formed on a top surface of the first substrate 710 of the display panel, and the fourth sensing electrode 220 and the second conductive line may be formed On the rear surface of the second substrate 702. Referring to FIG. 18, the third and fourth sensing electrodes 210 and 220 and the first and second conductive lines may be formed on a top surface of the first substrate 701. An insulating layer may be formed between the third sensing electrode 210 and the fourth sensing electrode 220. In addition, referring to FIG. 19, the third sensing electrode 210 and the fourth sensing electrode 220 may be formed on a rear surface of the second substrate 702. The insulating layer 630 may be formed between the third sensing electrode 210 and the fourth sensing electrode 220.

Referring to FIG. 20, the third sensing electrode 210 and the first conductive line may be formed between the first substrate 701 and the second substrate 702. In addition, the fourth sensing electrode 220 and the second conductive line may be formed on the touch substrate 106. The touch substrate 106 may be disposed on a display panel including a first substrate 701 and a second substrate 702. That is, the third sensing electrode 210 and the first lead may be disposed inside the display panel, and the fourth sensing electrode 220 and the second lead may be disposed outside the display panel.

The third sensing electrode 210 and the first conductive line may be formed on a top surface of the first substrate 701 or a rear surface of the second substrate 702. In addition, an adhesive layer may be formed between the touch substrate 106 and the display panel. In this case, the touch substrate 106 can serve as a cover substrate.

Although the configuration in which the fourth sensing electrode 220 is formed on the rear surface of the touch substrate 106 is depicted in the drawings, the embodiment is not limited thereto. The fourth sensing electrode 220 may be formed on the top surface of the touch substrate 106, and a cover substrate may be further formed while the cover substrate is inserted between the touch substrate 106 and the adhesive layer.

That is, the embodiment is not limited to the drawings, and it is sufficient if the embodiment has the following structure: the third sensing electrode 210 and the first lead are disposed inside the display panel and the fourth sensing electrode 220 and the second lead Placed outside the display panel.

In addition, the touch substrate 106 may be a polarizing plate. That is, the fourth sensing electrode 220 may be formed on the top or the rear surface of the polarizing plate. Therefore, the fourth sensing electrode may be integrally formed with the polarizing plate.

In addition, a polarizing plate can be further provided without the touch substrate 106. In this case, the polarizing plate can be placed under the touch substrate 106. For example, a polarizing plate can be inserted between the touch substrate 106 and the display panel. In addition, a polarizing plate may be disposed on the touch substrate 106.

When the display panel is a liquid crystal display panel and the sensing electrode is formed on the top surface of the first substrate 701, the sensing electrode may be formed together with a thin film transistor (TFT) and a pixel electrode. to make. In addition, when the sensing electrode is formed on the rear surface of the second substrate 702, a color filter layer may be formed on the sensing electrode or the sensing electrode may be formed on the color filter layer. When the display panel is an organic light emitting device and the sensing electrode is formed on the top surface of the first substrate 701, the sensing electrode may be formed together with a thin film transistor or an organic light emitting device.

Meanwhile, referring to FIG. 21, the touch window may be disposed on the display panel 700 so as to act as a driver. The touch window can be combined with the display panel 700, so that a touch-sensitive device can be implemented.

A display area for outputting an image is formed in the display panel 700. A display panel applied to a touch-sensitive device may generally include a second substrate 702 and a first substrate 701. A data line, a gate line, and a thin film transistor (TFT) may be formed in the first substrate 701. The second substrate 702 can be adhered to the first substrate 701, so that the components disposed on the second substrate 701 can be protected.

Various types of display panels 700 may be formed according to the type of the touch-sensitive device. That is, the touch-sensitive device according to the embodiment may include a liquid crystal device (LCD), a field emission display, a plasma display panel (PDP), an organic light emitting diode (OLED), and an electronic paper display (EPD). Therefore, the display panel 20 may be implemented in various types.

As shown in FIG. 22, the touch-sensitive device may be a mobile terminal. In particular, the touch window may include a curved touch window. Therefore, the touch-sensitive device including the same may be a curved display device. In particular, the touch-sensitive device may be a touch-sensitive device whose edges can be bent.

Meanwhile, referring to FIG. 23, the touch-sensitive device may include a curved display device and may have a completely curved shape.

Meanwhile, referring to FIG. 24, the touch window may include a flexible touch window. Therefore, the display device including the same may be a flexible touch device. Therefore, the user can flex or bend the display device with his hand.

Meanwhile, referring to FIG. 25, the touch window can be applied to a vehicle navigation system and a mobile terminal. Although a vehicle navigation system is depicted in the drawings, embodiments are not limited thereto. Therefore, applying a touch window to a dashboard and a PND (Personal Navigation Display) makes it possible to implement a CID (Central Information Display). However, the embodiment is not limited to this embodiment. In other words, displays can be used in various electronic products.

Any reference in this specification to "one embodiment", "an embodiment", "example embodiment", etc. means that a particular feature, structure, or characteristic described in connection with the embodiment is included in the present invention. In at least one embodiment. The appearances of these phrases in various places in the specification are not necessarily all referring to the same embodiment. In addition, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is believed that those skilled in the art have the ability to implement this feature, structure, or characteristic in combination with others in the embodiment.

Although the embodiments have been described with reference to several illustrative embodiments, it should be understood that those skilled in the art will be able to design many other modifications and embodiments that would fall within the spirit and scope of the principles of the invention. More specifically, within the scope of this disclosure, the drawings, and the scope of the attached patent application, there may be various changes and modifications to the components and / or configurations of the subject combination configuration. In addition to variations and modifications in the component parts and / or arrangements, alternative uses will also be apparent to those skilled in the art.

Claims (28)

  1. A capacitive touch sensor includes: a substrate including a first active region and a second active region extending from the first active region; a sensing electrode disposed on the substrate to sense Measuring a position; and a protective layer on the sensing electrode, wherein the first active area and the second active area each detect a position of an input device, wherein the first active area is flat, wherein The second active region is bent from the first active region, wherein the sensing electrode includes a plurality of sensing electrodes, wherein the protective layer includes a first protective layer and a second protective layer, wherein the first protective layer is in the On a top surface of a sensing electrode, the second protective layer is interposed between a top surface of the substrate and a bottom surface of the sensing electrode, and a thickness of one of the first protective layers is greater than that of the sensing electrode. A thickness, wherein the first protective layer includes a plurality of protective portions, and the protective portions are separated from each other.
  2. For example, the capacitive touch sensor of item 1 of the patent application scope, wherein by adjusting a refractive index, at least one of the first protective layer and the second protective layer matches the refractive index of the sensing electrode.
  3. For example, the capacitive touch sensor of the first patent application range, wherein the first protective layer is provided between the sensing electrodes, and wherein the first protective layer is in direct contact with the sensing electrodes.
  4. For example, the capacitive touch sensor according to item 3 of the patent application, wherein the first protective layer directly contacts the second protective layer between the sensing electrodes.
  5. For example, the capacitive touch sensor of the first patent application range, wherein the sensing electrode includes: a first sensing electrode on the first active area; and a second sensing electrode on the On the second active region, the first sensing electrode includes indium tin oxide, indium zinc oxide, copper oxide, tin oxide, zinc oxide, or titanium oxide, and the second sensing electrode includes a nanowire, a carbon nano Rice tube (CNT), graphene or conductive polymer.
  6. For example, the capacitive touch sensor of the first patent application scope, wherein the protective layer comprises a polymer.
  7. For example, the capacitive touch sensor of the first patent application range, wherein the protective layer includes one selected from the group consisting of polyurethane, acrylate, methacrylate, ring Oxygen resin, polycarbonate, polyethylene and polystyrene.
  8. For example, the capacitive touch sensor of the first scope of the patent application, wherein at least one of the first protective layer and the second protective layer has a thickness in a range of 1 μm to 20 μm.
  9. For example, the capacitive touch sensor of the first patent application scope, wherein the substrate is flexible.
  10. For example, the capacitive touch sensor according to item 1 of the patent application, wherein the sensing electrodes include: a sensing electrode extending in a first direction; and another sensing electrode which is connected to the first One of the directions intersects and the second direction extends.
  11. For example, the capacitive touch sensor of the first patent application scope, wherein the first and second protective layers are in direct physical contact with at least one of the sensing electrodes.
  12. For example, the capacitive touch sensor of the first patent application range, wherein the first protection layer is divided into the protection portions, so that a first protection portion is laterally separated from a second protection portion and is separated by a second protection portion. Provided on the opposite side close to the first active area.
  13. For example, the capacitive touch sensor of the first patent application range, wherein the protection parts include: a first protection part and a second protection part, wherein at least one of the sensing electrodes is disposed on the first Between the protection part and the second protection part.
  14. For example, the capacitive touch sensor according to item 13 of the patent application, wherein the first and the second protection portions are disposed between the first and the second active regions.
  15. For example, the capacitive touch sensor of the first patent application range, wherein two adjacent sensing electrodes have respective side surfaces facing each other, and at least one of the protection portions covers the two adjacent sensing electrodes. The side surface of the electrode.
  16. For example, the capacitive touch sensor according to the first patent application scope, wherein the first protective layer covers at least one of the sensing electrodes and covers at least one top surface or one side surface thereof.
  17. For example, the capacitive touch sensor of the first patent application scope further includes a cover substrate on the substrate, wherein the cover substrate has a specified shape corresponding to a shape of the substrate.
  18. For example, the capacitive touch sensor of claim 17 in which the second active region is bent from the first active region in a direction from a front side to a rear side of the substrate, and the sensing electrode is It is convex and perpendicular to a front surface of the substrate.
  19. For example, the capacitive touch sensor of the first patent application range, wherein the first protective layer is thicker than the second protective layer.
  20. For example, the capacitive touch sensor of the first patent application scope, wherein the first protective layer is in direct contact with the second protective layer at an area between two adjacent sensing electrodes.
  21. For example, the capacitive touch sensor of the first patent application range further includes a resin layer disposed on the substrate, wherein the resin layer includes an intaglio printing portion, and the sensing electrode is disposed in the intaglio printing portion.
  22. For example, the capacitive touch sensor according to item 1 of the patent application, wherein one end of the second active region is bendable.
  23. For example, the capacitive touch sensor according to item 5 of the patent application, wherein the first sensing electrode and the second sensing electrode are spaced apart in parallel.
  24. For example, the capacitive touch sensor according to item 5 of the application, wherein the first sensing electrode is disposed beside the second sensing electrode.
  25. A display device includes: a display panel; a capacitive touch sensor disposed on the display panel; and a cover substrate on the capacitive touch sensor, wherein the display panel The substrate includes a lower substrate, and a thin film transistor (TFT) is disposed on the lower substrate. The capacitive touch sensor includes a substrate including a first active region and a first active region extending from the first active region. A second active area; a sensing electrode disposed on the substrate to sense a position; and a protective layer on the sensing electrode, wherein the first active area and the second active area are detected separately Measuring a position of an input device, wherein the first action area is flat, wherein the second action area is bent from the first action area, and the cover substrate has a specified shape which corresponds to the first action A shape of the region and the second active region, wherein the sensing electrode includes a plurality of sensing electrodes, wherein the protective layer includes a first protective layer and a second protective layer, and wherein the first protective layer is in the sensing On a top surface of one of the electrodes, wherein the second protective layer is interposed between a top surface of the substrate and a bottom surface of the sensing electrode, wherein a thickness of the first protective layer is greater than a thickness of the sensing electrode The first protection layer includes a plurality of protection portions, and the protection portions are separated from each other.
  26. For example, the display device of the scope of application for patent No. 25, wherein by adjusting a refractive index, at least one of the first protective layer and the second protective layer matches the refractive index of the sensing electrode.
  27. For example, the display device under the scope of patent application No. 25, wherein the display panel includes a liquid crystal device (LCD), a field emission display, a plasma display panel (PDP), an organic light emitting diode (OLED), and an electronic paper display (EPD). At least one.
  28. For example, the display device according to claim 25, wherein the second active area is curved toward the display panel.
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CN104423708B (en) 2019-08-23
US20150070309A1 (en) 2015-03-12
US20180004325A1 (en) 2018-01-04
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US10048821B2 (en) 2018-08-14
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JP2015053055A (en) 2015-03-19
TW201514817A (en) 2015-04-16

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